[INFO] fetching crate max32660-hal 0.2.0...
[INFO] checking max32660-hal-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate max32660-hal 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate max32660-hal 0.2.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate max32660-hal 0.2.0
[INFO] finished tweaking crates.io crate max32660-hal 0.2.0
[INFO] tweaked toml for crates.io crate max32660-hal 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 33 packages
[INFO] [stderr]       Adding bare-metal v0.2.5 (latest: v1.0.0)
[INFO] [stderr]       Adding bitfield v0.13.2 (latest: v0.14.0)
[INFO] [stderr]       Adding embedded-hal v0.2.7 (latest: v1.0.0)
[INFO] [stderr]       Adding hash32 v0.2.1 (latest: v0.3.1)
[INFO] [stderr]       Adding heapless v0.7.17 (latest: v0.8.0)
[INFO] [stderr]       Adding nb v0.1.3 (latest: v1.1.0)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.22)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cortex-m-rt v0.7.3
[INFO] [stderr]   Downloaded bare-metal v1.0.0
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.7.0
[INFO] [stderr]   Downloaded max32660-pac v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bd7ff6427441d99b44fd72fca73b8cd33d786a5323f1807a3e01b81728ca42e
[INFO] running `Command { std: "docker" "start" "-a" "1bd7ff6427441d99b44fd72fca73b8cd33d786a5323f1807a3e01b81728ca42e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bd7ff6427441d99b44fd72fca73b8cd33d786a5323f1807a3e01b81728ca42e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bd7ff6427441d99b44fd72fca73b8cd33d786a5323f1807a3e01b81728ca42e", kill_on_drop: false }`
[INFO] [stdout] 1bd7ff6427441d99b44fd72fca73b8cd33d786a5323f1807a3e01b81728ca42e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b96097b3d72660576e78177eaf6805f9f92154017f02b23b532dc33f20e63e1a
[INFO] running `Command { std: "docker" "start" "-a" "b96097b3d72660576e78177eaf6805f9f92154017f02b23b532dc33f20e63e1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling max32660-pac v0.1.2
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking cortex-m v0.7.7
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]     Checking max32660-hal v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `cortex_m::asm::nop`
[INFO] [stdout]  --> src/spi.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use cortex_m::asm::nop;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `embedded_hal::digital::v2::OutputPin`
[INFO] [stdout]  --> src/spi.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use embedded_hal::digital::v2::OutputPin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nb` is imported redundantly
[INFO] [stdout]   --> src/spi.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use nb;
[INFO] [stdout]    |     ^^ the item `nb` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::clocks::PCLK_FREQ`
[INFO] [stdout]  --> src/i2c.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::clocks::PCLK_FREQ;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cortex_m::asm::nop`
[INFO] [stdout]  --> src/i2c.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use cortex_m::asm::nop;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `embedded_hal::digital::v2::OutputPin`
[INFO] [stdout]  --> src/i2c.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use embedded_hal::digital::v2::OutputPin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `embedded_hal::blocking::i2c`
[INFO] [stdout]  --> src/i2c.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use embedded_hal::blocking::i2c;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `max32660_pac::i2c0::ctrl::SCL_PP_MODE_A`
[INFO] [stdout]   --> src/i2c.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use max32660_pac::i2c0::ctrl::SCL_PP_MODE_A;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nb`
[INFO] [stdout]   --> src/i2c.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use nb;
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `void::Void`
[INFO] [stdout]   --> src/i2c.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use void::Void;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cortex_m::asm::nop`
[INFO] [stdout]  --> src/spi.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use cortex_m::asm::nop;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `embedded_hal::digital::v2::OutputPin`
[INFO] [stdout]  --> src/spi.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use embedded_hal::digital::v2::OutputPin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nb` is imported redundantly
[INFO] [stdout]   --> src/spi.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use nb;
[INFO] [stdout]    |     ^^ the item `nb` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::clocks::PCLK_FREQ`
[INFO] [stdout]  --> src/i2c.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::clocks::PCLK_FREQ;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cortex_m::asm::nop`
[INFO] [stdout]  --> src/i2c.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use cortex_m::asm::nop;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `embedded_hal::digital::v2::OutputPin`
[INFO] [stdout]  --> src/i2c.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use embedded_hal::digital::v2::OutputPin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `embedded_hal::blocking::i2c`
[INFO] [stdout]  --> src/i2c.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use embedded_hal::blocking::i2c;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `max32660_pac::i2c0::ctrl::SCL_PP_MODE_A`
[INFO] [stdout]   --> src/i2c.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use max32660_pac::i2c0::ctrl::SCL_PP_MODE_A;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nb`
[INFO] [stdout]   --> src/i2c.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use nb;
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `void::Void`
[INFO] [stdout]   --> src/i2c.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use void::Void;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `nano` is never read
[INFO] [stdout]   --> src/clocks.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Clocks<'a>{
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 43 |     x32k: X32k,
[INFO] [stdout] 44 |     nano: NanoRing,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sclk`, `miso`, and `mosi` are never read
[INFO] [stdout]   --> src/spi.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct Pins<
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 40 |     sclk: Pin<AF, Output<PushPull>, SCLK_IDX>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 41 |     miso: Pin<AF, Input<Floating>, MISO_IDX>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 42 |     mosi: Pin<AF, Output<PushPull>, MOSI_IDX>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TX_FIFO_LEVEL` is never used
[INFO] [stdout]   --> src/i2c.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | const TX_FIFO_LEVEL: u8 = 16;
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `scl` and `sda` are never read
[INFO] [stdout]   --> src/i2c.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Pins<
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 47 |     scl: Pin<AF, Input<Floating>, SCL_IDX>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 48 |     sda: Pin<AF, Input<Floating>, SDA_IDX>
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pins` is never read
[INFO] [stdout]   --> src/i2c.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub struct I2CPort<
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pins: Pins<AF, SCL_IDX, SDA_IDX>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `nano` is never read
[INFO] [stdout]   --> src/clocks.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Clocks<'a>{
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 43 |     x32k: X32k,
[INFO] [stdout] 44 |     nano: NanoRing,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sclk`, `miso`, and `mosi` are never read
[INFO] [stdout]   --> src/spi.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct Pins<
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 40 |     sclk: Pin<AF, Output<PushPull>, SCLK_IDX>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 41 |     miso: Pin<AF, Input<Floating>, MISO_IDX>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 42 |     mosi: Pin<AF, Output<PushPull>, MOSI_IDX>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TX_FIFO_LEVEL` is never used
[INFO] [stdout]   --> src/i2c.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | const TX_FIFO_LEVEL: u8 = 16;
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `scl` and `sda` are never read
[INFO] [stdout]   --> src/i2c.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Pins<
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 47 |     scl: Pin<AF, Input<Floating>, SCL_IDX>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 48 |     sda: Pin<AF, Input<Floating>, SDA_IDX>
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pins` is never read
[INFO] [stdout]   --> src/i2c.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub struct I2CPort<
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pins: Pins<AF, SCL_IDX, SDA_IDX>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.85s
[INFO] running `Command { std: "docker" "inspect" "b96097b3d72660576e78177eaf6805f9f92154017f02b23b532dc33f20e63e1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b96097b3d72660576e78177eaf6805f9f92154017f02b23b532dc33f20e63e1a", kill_on_drop: false }`
[INFO] [stdout] b96097b3d72660576e78177eaf6805f9f92154017f02b23b532dc33f20e63e1a